<template>
  <div class="about">
    <el-card>
      <h1>{{ id ? "编辑" : "新建" }}分类</h1>
      <el-form label-width="120px" @submit.native.prevent="save">
        <el-form-item label="名称">
          <el-input v-model="model.name"></el-input>
        </el-form-item>
        <el-form-item label="图标">
          <el-upload
            class="avatar-uploader"
            :headers="getAuthHeader()"
            :action="uploadUrl"
            :show-file-list="false"
            :on-success="afterUpload"
          >
            <img v-if="model.icon" :src="model.icon" class="avatar" />
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
          </el-upload>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" native-type="submit">保存</el-button>
        </el-form-item>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  props: {
    id: {},
  },
  data() {
    return {
      model: {},
    };
  },
  methods: {
    afterUpload(res) {
      // console.log(res);
      // 因为在model中没有定义icon字段，要使用vue的显示赋值语法，新建并传值然后显示，就不能使用this.model.icon=res.url来进行动态绑定
      this.$set(this.model, "icon", res.url);
    },
    async save() {
      let res;
      if (this.id) {
        res = await this.$http.put(`rest/items/${this.id}`, this.model);
      } else {
        res = await this.$http.post("rest/items", this.model); //eslint-disable-line no-unused-vars
      }
      this.$router.push("/items/list");
      this.$message({
        type: "success",
        message: "保存成功",
      });
    },
    async fetch() {
      const res = await this.$http.get(`rest/items/${this.id}`);
      this.model = res.data;
    },
  },

  created() {
    this.id && this.fetch();
  },
};
</script>

<style scoped>
</style>